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ACQUISITION OF SANGAMO FRANCE - Additional Information (Detail) - USD ($)
$ / shares in Units, shares in Thousands
12 Months Ended
Oct. 01, 2018
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Jul. 20, 2018
Business Acquisition [Line Items]            
Goodwill impairments   $ 0 $ 0 $ 0    
Sangamo France            
Business Acquisition [Line Items]            
Business Combination, Consideration Transferred $ 45,900,000          
Purchase price per share (in dollars per share) $ 2.99          
Sangamo France | SPA and TOA            
Business Acquisition [Line Items]            
Percentage of equity interests agreed to acquire   100.00%     100.00%  
Number of free shares held by the holders (in shares)           477
Estimated fair value of free shares liability $ 200,000          
Estimated fair value of free shares asset     $ 100,000